CVE-2022-25326: Github.com/google/fscrypt Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-mpq4-rjj8-fjph
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CVSS 5.5
CWE-400
Published
Advisory Summary

CVE-2022-25326 is a MODERATE (CVSS 5.5) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Github.com/google/fscrypt libraries in the Go ecosystem. The issue involves uncontrolled resource consumption in github.com/google/fscrypt. Remediation is available by upgrading affected packages to version 0.3.3.

CVE-2022-25326 at a Glance

CVE Identifier CVE-2022-25326
GHSA Identifier GHSA-mpq4-rjj8-fjph
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Github.com/google/fscrypt
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2022-25326

To remediate this vulnerability, upgrade all affected Github.com/google/fscrypt dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/google/fscrypt fixed: 0.3.3 
Upgrade github.com/google/fscrypt to 0.3.3
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/google/fscrypt

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-25326, inspect your project dependencies for Github.com/google/fscrypt:

inspect dependencies for github.com/google/fscrypt

Analyze the terminal output to locate any version of Github.com/google/fscrypt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.3), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Github.com/google/fscrypt, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

fscrypt through v0.3.2 creates a world-writable directory by default when setting up a filesystem, allowing unprivileged users to exhaust filesystem space. We recommend upgrading to fscrypt 0.3.3 or above and adjusting the permissions on existing fscrypt metadata directories where applicable.

CVE-2022-25326 Affected Github.com/google/fscrypt Versions

1 component(s)
Fixed Versions:
0.3.3
Product / Package Ecosystem Affected Versions Fixed Version
github.com/google/fscrypt
golang/github.com/google/fscrypt
Go
< 0.3.3
0.3.3

References

NVD — CVE-2022-25326 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-25326
Github.com/google/fscrypt Source Repository REPOSITORY
https://github.com/google/fscrypt/pull/346
Security Fix Commit FIX COMMIT
https://github.com/google/fscrypt/commit/91aa3ebf42032ca783c41f9ec25d885875f66ddb
Github.com/google/fscrypt Source Repository REPOSITORY
https://github.com/google/fscrypt

Frequently Asked Questions

What is CVE-2022-25326?
CVE-2022-25326 is a security vulnerability in Github.com/google/fscrypt involving Uncontrolled Resource Consumption in github.com/google/fscrypt under CWE-400: Uncontrolled Resource Consumption.
Which Github.com/google/fscrypt versions are affected?
Affected versions include releases prior to 0.3.3 across affected packages: github.com/google/fscrypt.
What version fixes CVE-2022-25326?
Upgrading to 0.3.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/google/fscrypt affected?
Yes, github.com/google/fscrypt is affected in releases prior to 0.3.3. Upgrade your dependency to 0.3.3 or later.
What is the CVSS score of CVE-2022-25326?
CVE-2022-25326 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2022-25326?
CVE-2022-25326 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Go dependencies for CVE-2022-25326?
Run the dependency tree command: 'inspect dependencies for github.com/google/fscrypt'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mpq4-rjj8-fjph",
  "modified" : "2022-03-07T13:42:34Z",
  "published" : "2022-02-26T00:00:44Z",
  "aliases" : [ "CVE-2022-25326" ],
  "summary" : "Uncontrolled Resource Consumption in github.com/google/fscrypt",
  "details" : "fscrypt through v0.3.2 creates a world-writable directory by default when setting up a filesystem, allowing unprivileged users to exhaust filesystem space. We recommend upgrading to fscrypt 0.3.3 or above and adjusting the permissions on existing fscrypt metadata directories where applicable.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/google/fscrypt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-25326"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/google/fscrypt/pull/346"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/google/fscrypt/commit/91aa3ebf42032ca783c41f9ec25d885875f66ddb"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/google/fscrypt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-01T19:25:48Z",
    "nvd_published_at" : "2022-02-25T11:15:00Z"
  }
}